Własności piezoelektryczne włókien ceramicznych

Abstract

Ceramic piezoelectric materials can be prepared in various forms and shapes, starting from traditional bulk volumetric ceramics, and thin or thick ceramic layers fi nally ending in the form of ceramic fibres or even virtually any shape which is associated with novel production methods taking advantage of 3D printers. Piezoelectric fibres have a number of advantages compared to volumetric ceramics of the same type. Among them are improved anisotropy of properties, impossible to achieve in bulk ceramics, flexibility and associated with this greater mechanical strength. However, the methods, the quality of the starting components and the conditions for preparing this type of piezoelectric fibres still remain a vast area of research and investigations in order to effect optimum electrical and electromechanical properties of the final material. Objects of the experiment were to produce piezoelectric fibres by the extrusion method, examine electrical and piezoelectrical parameters, and comparative analysis with commercial bulk ceramics properties.